1233871 has 4 divisors (see below), whose sum is σ = 1238544. Its totient is φ = 1229200.

The previous prime is 1233851. The next prime is 1233887. The reversal of 1233871 is 1783321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1233871 - 2¹⁵ = 1201103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1915 + ... + 2476.

It is an arithmetic number, because the mean of its divisors is an integer number (309636).

2^1233871 is an apocalyptic number.

1233871 is a deficient number, since it is larger than the sum of its proper divisors (4673).

1233871 is an equidigital number, since it uses as much as digits as its factorization.

1233871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672.

The product of its digits is 1008, while the sum is 25.

The square root of 1233871 is about 1110.7974612863. The cubic root of 1233871 is about 107.2564089678.

The spelling of 1233871 in words is "one million, two hundred thirty-three thousand, eight hundred seventy-one".